10 BOTANY. Rocky Mountain ranges It is known according to Mr. Watson, in the Uintah Mountains as "Bear River or Swamp Pine". Abies Menziesii, Lindl.—This tree attains an average height of from 50 to 60 feet. Timber hard and coarse-grained, but is serviceable for rough work. Juniperus Virginiana, L.—A much branched, dwarfed tree, found asso¬ ciated with the Pinon Pine. It is of great value as furnishing the most durable feneing-^josts. It is probably abundant enough in Southern Co¬ lorado to meet the demands for many years. There are, besides, several species of cottonwood, none of them, how¬ ever, being of any great value except for shade. It may be well to remark that, on almost any, if not all of the ranches where irrigation is possible, in a few years the settler may relieve the con¬ stant glare of the sun by a fine, thrifty cottonwood grove about his build¬ings. The experiment has so often succeeded that it is no longer a problemto solve. AGEICULTUEAL EESOUECES. Taking Denver as a starting-point, it is known that fair crops of wheat,rye, oats, barley, and corn may be raised with a tolerable degree of cer¬tainty where irrigation can be resorted to. The same statement is true ofthe region east of but bordering the foothills, as far south as the surveyextended this year (1873); the certainty (other things being equal) increasingtoward the south. Grasses and sedges suitable for grazing purposes flourishin greater or less abundance, especially as the foothills are approached andthe valleys between them penetrated into. The drier portions of the country (especially where water is "withinreach) may be advantageously utilized as sheep-walks. The grass of suchregions is nutritious and abundant enough for this purpose. As an illustra¬tion I may allude to Pluerfano Park, wliich now affords pasturage toimmense droves of sheep. The great objection to allowing them indiscrimi¬nate range is, that where they go, the grass is so soiled that horses andcattle refuse to touch it. Hence the bitter antagonism between the twoclasses of herdsmen. An equitable division of the public lands would be to confine the sheep to the region of the shorter grasses, giving cattle and